Sound-box.



R. HEAD. SOUND ox` APPLICATION FILED MEGA, 19|?.

1,275,914. Pammedlxug. 13, 1918.

@l v1 ua ntoz @gus nonnern'mi, or Nnwjronx;

yN LSSI'G'NOB, r.ro 'rms Anonimi comrANY, A coltre enorm-Box.

Patented Aug. 13,1918.

, innemen meu August e, 1917. serninmieasi'r.

Tja imam-tim@ 60mm-.f

Be itknown that;I, 'Roennr Emma citi- 'zen of the UnitedY States, *residing New Yo k, in the county of NewYorkildiState Y of- New- York, have invented neW"ai1d Iuseful Improvements in SpundBoxesgoflwlrichthe following is, a specicatlion;Y

This invention relates'to sound-boxes for talkingmechines, and in Pertieu'lar-tothose lofk the` so-oelledA converltiblefv or j universal ltype,whicb may 'bensedto play records of both the vertical-"ond thev lateral-cut forms.'

Under 'ordinary coridition's, it is customary, due to the difference in the Way in which the `soundwaves are 'recorded in the rooves,'eitlfier1to shift the soundebox rom one'pgsiti'on to another when changing 'from one', ype of record to e record` of differenttype (2i-else to utilize e stylusbar ljiavigwa tbl stylnsjholder which may `be-Inoved:fromlone position to` another, ec-

cording t'ofthe type ofreoord to bepl'eyed.

In certain other formsl of- 'univer'sal soundboxes, two seperate stylus holders erefproi vided, one for us'e inplaying each type of retord, each holder being furnished with its "own screw or other clamp to retain the stylus in place inthe socket or bore of the holder.

Ali of these constructions require. appro# ciable manipulation before playing can be eoinn'ienced, and some of them .are comparatively expensive to inanufeeture X The4 /ent invention has for-its primary cbgeetr to simplify the constructions above described, by avoiding all of the' preliminery manipulation. and reducing 4 the number oi? neefxiry parte without, however, in any wey img iairing tlue` effectiveness of the former constructions. According to the illustrated embodiment of the invention; a

4substentielly L-Shaped,sty1us ber is provided, theffower arm of which is both widenedud tbiekened'tb permit the .forma-- tion'iof e of spaced, parallel, vertical socke'ie therein, one for use when playing i vertical-cnt records and the other for let eifel ont records; This arm ifs'llhen eplit vertically ,from end to`end,'so as to form two counterpart spring jews, the piene of the split int seating both sockets; and the erm ted with e single, oentrallydoceted clamping screw which nets to alternatively open or close the thereby releasing or securing'n stylus; in either playing position or both Styli at thefsalne time.

In the embodiment of the invention illustrated in ,the Aaceompanying drawing,

Figure l is `n faee view of a. sound-box equipped with the improved stylus bar.

Figs. 2 and 3 are enlarged, fregmentalf; detail views of .the olainpportionof the bar,-` Fig. 2 being a face view, and Fig. Sen edge view. j

Fig. .4 isa ,bottom plan view. Fig. 5 is an enlarged view-of the clamp ing ecrew.4

Referring more particiilarly to 'said drawing, 1 designates the body of the sound.-box, 2 the diaphragm4 thereof, 3'the stylus bar end 4: the spaced supporting parts or lugs for the bearing-'screws 5, between which lat ter thejstyluebar is mounted to oscillate. All ofytlie obovefparts function in the usual manner, and, with the exception' of the stylus' bargare, or vmay be, ofthe usual or 76 ari ,f-"desired construction.' f

he stylus baigne' Shown, 'isof one-piece construction. Its upperv arm 3is fastened atthe free end thereo ft'o the diaphragm in the usual way, while elower erm 32 funcf tionsJ es thestylns holder.v In the illustrated l embodiment ofthe invention, which, for all practical purposes, may be regarded as preferred, the aforesaid low-'er eign projects lat erelly outward from the diphregm end". is` thickened both vertically and horizontally to en extent suflicient to enable the formation vtherein of a pair ofy lmartial sockets '6 and 6', which ere'errangedin: spacedylpar- `ellel relation. The inner .socked isf-de-` signed to receivetheistylus` when a lateralout or zigzag record isto be played, and for that reason,is-disposedltsubstantiellyin 'axiai elinement with them per ferm@ l .the.stylusf l`)er, the outer-*ecc et 6 receiving 'itheetvlus when a vertical-cut onhll-endri dale" record is to be'pleyed. y

,Triep-@men rof the. holder4 am tween the sockets 6 and 6 is out ewa A .O ,t

vertieu portions is extended upward beyond the top of the` outer portion 8', and. 1s

formed with a pair of trunnions 9, which are disposed between the supporting lugs 4 and are engaged by the bearing-screws' 5,

the trunnions thus determining the axis' of vibration of the bar. The effect of the above is to virtually provide two small holders which are distinct' and separate from each other, though integrally connected by the neck 7, the arrangement of the inner holder"`8 directly beneath the pivots or trunnions Q anll in line with the upper portionv of the bar" enabling thelateral vibrations set up by the recording of the sound-waves vin the side walls of the grooves to be acciT-.f rately and positively transmitted through f the stylus bar to the diaphragm inl the usual way when a lateral-cut record is being "playedf Similarly, the arrangement of theouter holder to one side of the axis of vibration of the bar, enables said holder to rise and fall in accordance withl the elevations. and depressions in .fthe bottom of the groove, when a hill-anddale record is'being played. In order to retain a stylus in either socket, according as=one type of record or the other is Ito be played, the holder arm 32 issplit vertically at l0 from end t0 end thereof, the korf or slit passing through both sockets andY through the connecting neck 7; also, it opens through the side and bottom edges oi the two holders and the .top edge of the outer holder 8', but terminates short of the trunnionsfj provided on the upper end of the inner; lio'fliler 8, as indicated byfthefdotted line in Fi 2. As a result .of the formation of this .'slit, two oppositely-disposed, counterpart jaws are produced, which, vby their movements toward andfroin each other, control both sockets simultaneously,andwill grip or re-j:

- lease the stylus with the same facility irre spective of the socket in which it may hap-- pen to be arranged. The movements of, the

contacts with the front jaw, so that when jaws necessary to eii'ect these actions are preferably obtained by a single screw 1, the shank 12 of which passes through registering openings 13 and 13 formed through the neck portions of the two jaws. Only one of these openings, namely the one formed in the rearjaw, is threaded, and, of course,. 0nly the outer or terminal portion of the screw shank has threads thereon,

the v`front opening 13 and .the inner ortion of thescl'ew shank being unthreade The; screw is'provided, however, with an intermediate enlargement or collar 14, which said screw is turned in 'one directing.its*` collar will press said ja'wtoward the-:rear

Aclamping means carried by said jaw and thus enable it, in turn, to move away from the rear the needle.

I claim -asm'y invention jaw, thereby releasing 1.. In .a universal sound-box, a stylus bar- -having a laterally-projecting lower arm pro-v vided with two separate stylus sockets, and

Aa 'singlelcl'amp for similarly controlling both 'controlling both sockets simultaneously and .in the sume manner.

4. In a universal sound-box, a stylus bar having a pair of separate stylus sockets, and

a single clamping jaw oralternati'vely opening or -closing both sockets simultaneously. f

In a sound-box, a stylus bar provided at one end with a pair' of (io-acting spring jaws, said jaws'havinga pair of separate stylus sockets formedY between them, and means for cont-rolling the opening and closing of said jaws. l

6. In a sound--boX,--afstylus' bar provide at one end with a pair of co-acting spring jaws, said jaws having a pairof separate stylus sori'kets formed between them, and a single clamping screw for controlling the opening and closing of said jaws.

47. In a sound-box, a stylus. bar having at one end an enlarged and thickened portion, which is split to produce a Apair of meeting spring jaws, said having a pair L'. stylus sockets formed between them, anni orton for IUC ica

controlling the opening and closing of said jaws. v

8. In a sound-box, a stylus bar provided at one end with a pair of separate styus holders, and with a neck connecting them, each holder comprising a air of spring jaws, and a controlling device common to both airs of jaws mounted on said neck.

9. n a universal sound-box, a st lusbar `.provided at one en d .with apair o spaced,

parallel stylus liolders ,1 and with a neck.

connecting them, and a single clamping screw mounted iii said' neck for alternatively "popening or closingbothl holders simultaeously. j A 'In testimony whereof I have. hereuntoset jaw, while rotationv of the screw in the op-v posite direction will? remove the pressure my hand ,f of said collar from the aforesaid front ROBERT HEAD. 

